The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 04, 2026
Filed:
May. 20, 2019
Applicant:
Jfe Steel Corporation, Tokyo, JP;
Inventors:
Takashi Terashima, Tokyo, JP;
Karin Kokufu, Tokyo, JP;
Makoto Watanabe, Tokyo, JP;
Toshito Takamiya, Tokyo, JP;
Assignee:
JFE Steel Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01F 1/18 (2006.01); C23C 22/08 (2006.01); C23C 22/74 (2006.01); H01F 27/245 (2006.01);
U.S. Cl.
CPC ...
H01F 1/18 (2013.01); C23C 22/08 (2013.01); C23C 22/74 (2013.01); H01F 27/245 (2013.01);
Abstract
An electrical steel sheet having an insulating coating is provided. The electrical steel sheet is capable of reducing dielectric loss in a transformer in a case where the electrical steel sheet is used in a transformer core. An electrical steel sheet having an insulating coating, the insulating coating being disposed on at least one of surfaces of the electrical steel sheet, the insulating coating having a relative dielectric constant at 1000 Hz of less than or equal to 15.0 and a dielectric loss tangent at 1000 Hz of less than or equal to 20.0.